Vapor-controlling system for engines



Mar. 13,1928.v

4 R. J. SWEET. VAPOR CQNTRGLLING SYSTEM FOR ENGlNES- 1 SHEETS SHEET L FILED van" Mar. 13, 1923. 1,448,167. R. J. SWEET. 1.

VAPOR comaoums SYSTEM FOR ENGINES- FILED JAN. 7,1920. SHEETS SHEET 2.

Feenied i5, F323.

Iii'HEEE SWEET,

'iFAIiPOBrCQNTEGLLING F63 iippiicatioxi filed JanuaryY, 1320. Serial No 3412133432,

citizen of the United States, residing at Bii'zfeio, in the county of Erie and State of New York. have invented new and useful impi'nven'ienis in Vuporoiiiro1iiiig Sys-- tems for Engines, of which iiie ioiimving is 15 specification.

This invention relates to an inieinai sombnsition vapor motor or gas engine WhiPi! derives its power from the igniting oi a compressed charge of air and fuel.

fine oi the oojevis of the invention is to provide for 'Liie feeding of a heated and definiteiy measured quantity of (:(HIEPK'ESSMi gas into The engine C 'iiI1&i3!'.

I; further object of the invent-non is w provide for this measuring and heating of ihe ceingi ressed gas in a specie: or siippiemenizii gas measuring eizimi'oer, which functions as an indepenilenfi part of the engine, so that the presence of gesoiine vapor therein. does not B. i the inbi'icni eri surfaces of any working pui'is oi the engine which are not :iii'eetiy associiiied with the control of the incoming gm. 7

A a i fiif'iliii-Bi? objevt of the invention. is ,to provide for a measni iiig arrangement si iiii-ii in zippii iiiiiie in one type ef engine which is known to ioe very 'iow ii} vibration and. does not knack even when imdiy Worn.

wcompim ng drawings:

18 a we iJUiii transverse section through ene form of the improved internal combustion mo'ioi. Figlii'fi is 21 vertical transverse sectien through a modified foi'm of the motor.

Similar characters of reference indicate corresponding: pin-is in both views.

The geneini scheme of this iYIFI'JZOYQQ i moioi' in i 'i'ei'ce (ZQEEiiJU tilde under me into a measuring ("ii-amber and then iiiscimi'ge iii e ineesnieii amenni oi? into the engine cylinder. Unis feature of this iengemeniz is that said measuring (immiiei' may be arranged ciose to the engine cyiiniier and therein heated. so than; the vmnpresseii gas which is i'aiised to remain in said whamim for a short time is iiim'ougiiiy vaporized by season f" the voinbineii me and prensiii'e hefoie iwin .iiiseiiairgmi into the vyi- This broad zippiiizzitioii finder and. nihd. of the innon may be ap": ieiiv to 21m 0? the iypes of internal combustion inoims now in nee whether of ihe two-cy-cie or the "inurcvcie' sii'oke.

For the purpose of iiinstx'aiion, however,

the invention shown appiied to ii gasoline two-eyeleengine 10 having a stationary,

vertical cylinder 11, a crank case 12 a crank siiafi 1.3, e piston 1%, and :1 connecting rod 15 which is pivotaiiy connected eitits upper end to the wi'isi pin of said pision and is pivotaliy comm-("ted its lav-lei" end to the Frank pin 14.3 of the crank shaft. As is comnion plziltim in two-cycie engines, an exiuiust port 17 is. formed in. one will} of the vyiiniier 11, which port is uncovered or opened by the descending piston 14: at the lower emi of its stroke, so to permit the spent exhaust gases in the cyiiniiei' to pass om; of said e innlst post-t inio the iiimospiiezce or into a. sui iebie mnii'ier in ithe :isliei mini weii-imoivn mannen Affiei' most of iciie spent have passed out of Eiie eyiiiide: iin'ougii the exhaust port 1?, the pision 14. coiiiinuecsie descend and nncoveis feeding vagioi' poi-i; 18 which is formed in the Wei ef the eyiimier opposite to @1161 somewhat iowei' 421E811 the exhausi,

' r- X F 1 port i Lombusmie gm: or vapor is empted to be ffil'fifii under: pressure from said feeding vapor l8 iSQi-Cv i 21 yiiniiei. and against ebafiie piziite 2i fine manner. common to LWG iCjCi engines, nresenm being derived from a hie {gas ifoi'ce pump :"51. The gas inuo said. ifs-roe pump through an iniefi gas pipe-532 wherein the pressure is comparatively law, the being derived from suitable source such the gasoline embuietei' shown in iViieie e bio'wei 0i; veioeity ype of force pump employed, suitable cheek vsiive 26 may be eii'imge Within the inlet pipe 22 to (Assisi in maintaining a pressure me power e manner, such as by the pump spin e 2. which (irives bile said romi'y force pining L and is in turn driven by an intermediate spin 8 iiiet meshes with driving gem wiles! 30" ivhieh ie cter is secured to it i. crank sinift *Uonneeieii roeximiiy wnh seiii intermediate spur: gear 5 is a rotary mechanicsiiy-opemtmi or etiiei' suitable mive 3i \i'iiii-ii 1 .ens and doses in synnnmnisin with iiie motor and eonirols tin roinimsiibie gas which is ejected from the forve pump 21 and delivered into a pie heiitiiw and measuring chamber iii L through 2i gam't $3. The synchronous communication between said rotary viiive end said force T ibis construction the glue pump may lee (lenouiinuecl broeliy as the action of acct-off vvelvc. Said chenil'fser e o tends anuulerly completely er xc the our gine cylinder so YJhat tiie'ges which is reteincd in said cherub-cu for a "cut pei-ioil of fiime heated by, Queen h s contact with the cylinder. W ll flute zloe is thoroughly vaporize bytlie combined simultaneous act-ion of both like local the pressure. This measuriiig chumboi opens into engine 'cylinclec'tlirough the aforementioned. feeding vapor port 18 which is locetecl oreflie sicl-e of line engine which is opposite to the valve 3901*533 through which the gas cuEL-ei's said measuring chamber. Thus the peusielly vaporized or vapor which enters the measuring chamber is ceusedto pass completely crowed the heated engine cylinder beioi'e being vemed into the iutexior of said cylimler' timough the leech ing port 18 when the some is uncovered by iglic descendizcg piston. This synchronous coum'iumcalion betweeu the measuring chamber and ilieeugine cylinder be de- Hfi'hlllfilfll inc action an inlet valve. The exa-ict-lzimmg or the rotary valve 31 may i varied considerably according to 'elnc requi weenieo' iiie engine amlaccordmg to the z rgoe of the ei ginc, and the valve itself of suitable type oir mechanically The suicl valve 81 may be 'l to ogpen at any point in the cperaiion subsequent to the rising top of piston above the top eclge feecliiig port 1%. The closing of said fi i illiy occur at any cifme prior to. the un g; of said ieecliug port 18 by the depiston Eu'l; in any case it is doi the valve timing be such that the ve is closed Whenever the feeding is opened. Olliemvise, if mul t'iple ,i iuc {coiislzi-uocefi in uccori'laiice Wiili this invention} were lo he smiled up, 1 tie would be formal from the force pump rigiils lihitougii the cylinclei' and out of the exlieusiipipem/hich action is not deemed. desirable lac-cause of the danger and ineiiiciency involved and also because in such acese, 'i-lkfi measuring action Off Q38 measuring chamber would not be acclimate In the modified engine construction shown iii l 2 a roteijr valve 310 is employecl WilOSB hollow interior 320 acts in the capacity of a. measz'iring chamber. In speed of mm {1.54m of said valve 310 hail-f lllilii) of the. crank shell l3 end. cums in the direction iiulicu'tecl' by line arrows ff-Zui l valve is provided Willi 'two rotary valve poi-ts 40 and 10$) each oi? w iicii registers first with an nuclei; port -41. which communicates with the vapor force 121mm 21 and then i'egietezs with fihe feedins vzmoi' port 18 which communic'aes with lime eucylinder. The registering successivcly of each of said celery vel've ports and meme Off valve" and of an inlet valve, i'esceelively fi iius the vapor is first forced iii-om *uiie loi'oe pump through firsi', one anal time the Ollie/ref rotary valve ports and re mains for an. interval of time wichin the hollow im'ieriorEQU of the wot-a1"! valve 31 eiuci ell-en passes out time h some rotary valve pore ineo the engine cylinder, simi Early to the action which occurs in'the engine construction shown in Fig, 1. And similerly, also, there is no communication be.- twcen the force pump 21 and the hollow interior 320 of this modified rotary valve during the interval in which the feeding vapor port 18 is uncovered by'lhe engine piston 14. And similarly also the coinm'essecl vapor, gczl'iile remaining in said hollow interior 3290;? the rotary valve, is subjected co bhe iii action of the cylimier.

The general operation of the engine is mental heating end measuring chamber end thenc'ulliing oil communication between said. chamber and said pump and allowing the compressed char e l11 said chamber to be dis charged .clii-ectly niece the cylinder. Emismuch as the vefioif is highly compressed whilcfihe pisionis at the bottom oi." is stroke, and inasmuch as the vapor is compressed still more when the piston rises, it is obvious that the entire ignition stem of the engine 'mey be dispensed with Where the pressures are sufiiciently high. Such an arrangement however is not in most cases considered. desirable Where the fuel is mixed with the air before entering the engine cyliu (lei: t is also obvious that the liycliocau icon liquid 0;- gaseous fuel may be mixed with the. air at any point in the cycle of operations prior to thei'ii'ing' of the charge in the engine cylinder. 'llor instance, for certain classes of work it ('iesireble to feed the fuel into the feeding vapor port 18, thereby avoiding all Contact of the fuel, with she rotary valve 31 or 310 of the force pump 21.

The inventicn'as a Whole is unusually reliable in operation by reason of the positive feeding of a definitely measured and heated vapor charge to the engine irrespective of engine speed. The mechanical c0nsti'uclion is without week'ti'appy parts and is therefore not likely to out of order. Very flexible engine control is obtained irrespective of atmospheric conditions endilie engine involves no delicate machine work in its construction and may be constructed at low v TI claim my invention: 1

An internal (:(m' lmstion engine comprising .Wor cylinder, a piston iecig ntocuting in with a living stroke by an exploding charge of fuel in he eyliix-tler, meims for supplying fuel, a measuring chamber hiiving a fuel inlet, adapted to connect with said fuel supply means' end an uutlet adapted to commimieete with said cylimler, and valve means which lace the measurin. chamber and cylinder 111 communication uring the last part at the forwertlstmke at the piston and the first partof thebackward stroke of the same and which cut of? communication v between seiil fuel supply and the measuring chambezuyihile the latter is in communication with said cylinder and place said fuel supply and-measuring chamber in communication while communication between said measuringchamber and cylirr der is cut off, whereby fuel is delivered from the fuel supply into the measuring chamber and the latter is filled so as'to measure the I quantity of fuel therein, then the measuring chamber is cut off from the fuel supply, and then this measured quantity of fuel is de livered to'the (:y-lindervrlux'ingr the last part of the forward stroke and the first part of the backward-stroke of the piston in the eylinder.

ROGER J. SWEET. 

